Term definition match the correct term to the right definition elliptical galaxy a) forms a perfect sphere or an ellipse and is flattened to some degree irregular galaxy b) has a large flattened core lens galaxy c) does not have a distinct regular shape spiral galaxy d) has a central core from which curved arms spiral outward

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.